on high

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Since the outbreak of the war of the Middle East, European countries have been on high alert for potential attacks on Iranian dissidents, Jewish places of worship and US-Israeli assets.

From Barron's • Mar. 28, 2026

Wearing military uniform, President Idris Mahamat Déby convened an emergency security meeting on Wednesday evening, where he ordered the military to be on high alert.

From BBC • Mar. 19, 2026

Sure enough, I tested positive for BRCA1, and now my doctors and I are on high alert not just for breast cancer but also linked cancers like prostate and pancreatic cancer.

From Los Angeles Times • Mar. 17, 2026

Because the diet relies on high fat foods and severely limits carbohydrates, it contrasts with the low fat diets traditionally recommended by many health experts.

From Science Daily • Mar. 9, 2026

He was so awed by the size of the crowd, he didn’t even notice the “camera pit” at the foot of the stage, or the camera crews perched on high scaffolds, their movie cameras whirring.

From "Boots on the Ground: America's War in Vietnam" by Elizabeth Partridge